The testing on data set D6 of ADACLUS: (a)The picture of data set D6; (b)The distribution of all minimal distances of data set D6;

A system, which is real-time, remote, automatic for monitoring the subsidence of building, is introduced. Hydrostatic leveling, displacement sensing by electromagnetism, GPRS wireless communication and computer technology are integrated into the system. The system has the following functions: real-time, continuous acquisition and management of the monitored data; automatic computation and analysis of the subsidence; remote, wireless release of information and early-warning. Applied successfully to monitor the subsidence of the main building of Tianjin West Railway Station in its integral moving, the system has taken the key directive effect in adjusting the schedule and the methods of construction timely.